Related Clues:

• Parakeet treat
• Bird-feeder food
• Chipmunk's morsel
• Burpee bit
• It's not needed in hydroponics
• 4-H Club concern
• Upper crust?
• Nut, basically
• It's a real pip
• Farmer's earth
• Sparrow snack
• A favorite at Wimbledon
• Bedrock's covering, perhaps
• Future flower, say
• Peach pit, e.g.